JP7059935B2 - Wireless communication equipment, control methods and programs - Google Patents

Description

The present invention relates to wireless communication devices, control methods and programs.

In recent years, with the rapid spread of wireless communication, the shortage of wireless communication band has become a problem. In order to eliminate the tightness of frequency, there is an increasing demand for a technique generally called beamforming as a technique for spatially improving the utilization efficiency of radio waves (frequency). Beamforming can improve the quality of signals and suppress unnecessary radiation to other wireless devices and systems by giving directivity to the radiated radio waves and radiating the radio waves only in a specific direction. .. That is, by using beamforming, radio waves can be spatially subdivided and used.
A typical method of beamforming is a phased array. The phased array synthesizes radio waves radiated from each antenna element in space by changing the phase of the radio signal fed to multiple antenna elements, and enables the radiation of radio waves in a desired direction. .. The phased array can be realized only by electrically adjusting the phase and the amplitude, and is more durable than the case where the antenna element is mechanically operated to obtain high directivity.
By the way, in communication using general beamforming, when the communication device to be communicated moves and the power gain decreases, it is not known in which direction the communication device moves. Therefore, Patent Document 1 proposes a technique of forming a plurality of directional beams and detecting the moving direction of the user from the quality of each received signal.

Japanese Unexamined Patent Application Publication No. 2003-298483

By the way, in the technique described in Patent Document 1, it is necessary to prepare a plurality of sub-receiving systems in addition to the receiving system forming the beam. In order to have a directivity different from that of the main receiving system, it is necessary to equip the sub receiving system with a phase shifter, and the circuit scale of the multi-element antenna increases dramatically.
Therefore, there has been a demand for a technique in which the circuit scale is small and the directivity of the antenna can be directed to the communication device to be communicated by detecting the movement of the communication device to be communicated.

An object of the present invention is to provide a wireless communication device, a control method and a program capable of solving the above problems.

In order to achieve the above object, according to one aspect of the present invention, the wireless communication device is a portion that combines a plurality of antenna elements and the first output signal of each antenna element to output a second output signal. A communication target based on a plurality of antenna units including a synthesizer, a partial power detecting means for measuring the signal strength of each of the second output signals, and the signal strength of each of the measured second output signals. A position specifying unit that specifies the position of the communication device, a total sum synthesizer that synthesizes the second output signals of the plurality of antenna units and outputs a third output signal, and a signal of the third output signal. A phase control unit that controls the phase of each antenna element is provided so that the main lobe, which is the beam having the maximum intensity, is directed to the position of the communication device specified by the position specifying unit.

Further, according to one aspect of the present invention, the control method is to synthesize the first output signal of each of the plurality of antenna elements to output the second output signal, and to output the second output signal, respectively. The signal strength of the above is measured, the position of the communication device to be communicated is specified based on the signal strength of each of the measured second output signals, and the plurality of second output signals are combined. The phase of each antenna element is set so as to output the third output signal and to direct the main lobe, which is the beam having the maximum signal intensity of the third output signal, to the position of the communication device. Including to control.

Further, according to one aspect of the present invention, the program synthesizes the first output signal of each of the plurality of antenna elements and outputs the second output signal to the computer, and the plurality of second outputs. Measuring the signal strength of each signal, specifying the position of the communication device to be communicated based on the signal strength of each measured second output signal, and synthesizing the plurality of second output signals. Then, the third output signal is output, and the main lobe, which is the beam having the maximum signal intensity of the third output signal, is directed to the position of the specified communication device. To control the phase and to execute.

According to the present invention, the circuit scale is small, and it is possible to detect the movement of the communication device to be communicated and direct the directivity of the antenna to the communication device to be communicated.

It is a figure which shows the structure of the phased array receiver by 1st Embodiment. It is a figure which shows the structure of the antenna block by 1st Embodiment. It is a figure which shows the antenna element which constitutes the antenna by 1st Embodiment. It is a figure which shows the processing flow of the phased array receiver by 1st Embodiment. It is a 1st figure which shows the radiation pattern of the array antenna by 1st Embodiment. It is the 2nd figure which shows the radiation pattern of the array antenna by 1st Embodiment. It is a figure which shows the structure of the phased array receiver of the comparative example in 1st Embodiment. It is a figure which shows the structure of the phased array receiver by the 2nd Embodiment. It is a figure which shows the processing flow of the phased array receiver by the 2nd Embodiment. It is a figure which shows the antenna element which constitutes the antenna by the 2nd Embodiment. It is a 1st figure which shows the radiation pattern of the array antenna by 2nd Embodiment. It is the 2nd figure which shows the radiation pattern of the array antenna by 2nd Embodiment. It is a figure which shows the phased array receiver of the minimum configuration by an embodiment.

<First embodiment>
Hereinafter, embodiments will be described in detail with reference to the drawings.
The configuration of the phased array receiver (wireless communication device) 1 according to the first embodiment will be described.

As shown in FIG. 1, the phased array receiver 1 according to the first embodiment has an antenna block 10a1 to 10a8 and an antenna block output combiner (described as “AB output synthesizer” in FIG. 1) 20a1 to 20a4 (partial synthesis). Unit), total sum synthesizer 30a1, A / D converter 40a1 to 40a5, power detector 50a1 to 50a4 (partial power detection means), power detector 50a5 (total power detection means), demodulation unit 60a1, control unit (phase control). Section, position specifying section) 70a1 is provided.
Hereinafter, the antenna blocks 10a1 to 10a8 are collectively referred to as an antenna block 10a. Further, the antenna block output synthesizers 20a1 to 20a4 are collectively referred to as an antenna block output synthesizer 20a. Further, the A / D converters 40a1 to 40a5 are collectively referred to as an A / D converter 40a. Further, the power detectors 50a1 to 50a5 are collectively referred to as a power detector 50a.

As shown in FIG. 2, each of the antenna blocks 10a includes antenna elements 101a and 101b, phase shifters 102a and 102b, and phase shifter output combiner 103a.

Each of the antenna elements 101a and 101b receives the radio wave transmitted by the transmitting device to be communicated.

The phase shifter 102a is connected to the antenna element 101a. The phase shifter 102a adjusts the phase of the signal due to the radio wave received by the antenna element 101a in response to the control signal from the control unit 70a1 described later. The phase shifter 102a transmits the signal after adjusting the phase to the phase shifter output combiner 103a.

The phase shifter 102b is connected to the antenna element 101b. The phase shifter 102b adjusts the phase of the signal due to the radio wave received by the antenna element 101b according to the control signal from the control unit 70a1 described later. The phase shifter 102b transmits the signal after adjusting the phase to the phase shifter output combiner 103a.

The phase shifter output synthesizer 103a receives a signal from the phase shifter 102a. Further, the phase shifter output synthesizer 103a receives a signal from the phase shifter 102b. The phase shifter output synthesizer 103a synthesizes the two received signals.

The antenna block 10a1 includes antenna elements 101a1, 101b1, phase shifters 102a1, 102b1, and a phase shifter output combiner 103a1.
The antenna block 10a2 includes antenna elements 101a2, 101b2, a phase shifter 102a2, 102b2, and a phase shifter output combiner 103a2.
The antenna block 10a3 includes antenna elements 101a3, 101b3, a phase shifter 102a3, 102b3, and a phase shifter output combiner 103a3.
The antenna block 10a4 includes antenna elements 101a4, 101b4, a phase shifter 102a4, 102b4, and a phase shifter output combiner 103a4.
The antenna block 10a5 includes antenna elements 101a5, 101b5, phase shifters 102a5, 102b5, and phase shifter output combiner 103a5.
The antenna block 10a6 includes antenna elements 101a6, 101b6, a phase shifter 102a6, 102b6, and a phase shifter output combiner 103a6.
The antenna block 10a7 includes antenna elements 101a7, 101b7, a phase shifter 102a7, 102b7, and a phase shifter output combiner 103a7.
The antenna block 10a8 includes antenna elements 101a8, 101b8, phase shifters 102a8, 102b8, and phase shifter output combiner 103a8.
As described above, in the first embodiment, each antenna block 10a is provided with antenna elements 101a, 101b, phase shifters 102a, 102b, and phase shifter output combiner 103a having the same number at the end of the code. , In the following, the symbols will be associated with each other for explanation.

The phase shifter output synthesizer 103a1 transmits the synthesized signal to the antenna block output synthesizer 20a1.
The phase shifter output synthesizer 103a2 transmits the synthesized signal to the antenna block output synthesizer 20a1.
The phase shifter output synthesizer 103a3 transmits the synthesized signal to the antenna block output synthesizer 20a2.
The phase shifter output synthesizer 103a4 transmits the synthesized signal to the antenna block output synthesizer 20a2.
The phase shifter output synthesizer 103a5 transmits the synthesized signal to the antenna block output synthesizer 20a3.
The phase shifter output synthesizer 103a6 transmits the synthesized signal to the antenna block output synthesizer 20a3.
The phase shifter output synthesizer 103a7 transmits the synthesized signal to the antenna block output synthesizer 20a4.
The phase shifter output synthesizer 103a8 transmits the synthesized signal to the antenna block output synthesizer 20a4.

The antenna block output synthesizer 20a1 receives a signal from the antenna block 10a1. Further, the antenna block output synthesizer 20a1 receives a signal from the antenna block 10a2. The antenna block output synthesizer 20a1 synthesizes the two received signals. The antenna block output synthesizer 20a1 transmits the combined signal to the summation synthesizer 30a1 and the A / D converter 40a1.

The antenna block output synthesizer 20a2 receives a signal from the antenna block 10a3. Further, the antenna block output synthesizer 20a2 receives a signal from the antenna block 10a4. The antenna block output synthesizer 20a2 synthesizes the two received signals. The antenna block output synthesizer 20a2 transmits the combined signal to the summation synthesizer 30a1 and the A / D converter 40a2.

The antenna block output synthesizer 20a3 receives a signal from the antenna block 10a5. Further, the antenna block output synthesizer 20a3 receives a signal from the antenna block 10a6. The antenna block output synthesizer 20a3 synthesizes the two received signals. The antenna block output synthesizer 20a3 transmits the combined signal to the summation synthesizer 30a1 and the A / D converter 40a3.

The antenna block output synthesizer 20a4 receives a signal from the antenna block 10a7. Further, the antenna block output synthesizer 20a4 receives a signal from the antenna block 10a8. The antenna block output synthesizer 20a4 synthesizes the two received signals. The antenna block output synthesizer 20a4 transmits the combined signal to the summation synthesizer 30a1 and the A / D converter 40a4.

The summation synthesizer 30a1 receives signals from each of the antenna block output synthesizers 20a. The summation synthesizer 30a1 synthesizes the four received signals. The summation synthesizer 30a1 transmits the combined signal to the A / D converter 40a5.

The A / D converter 40a1 receives a signal from the antenna block output synthesizer 20a1. The A / D converter 40a1 converts the received signal from an analog signal to a digital signal. The A / D converter 40a1 transmits the converted digital signal to the power detector 50a1.

The A / D converter 40a2 receives a signal from the antenna block output synthesizer 20a2. The A / D converter 40a2 converts the received signal from an analog signal to a digital signal. The A / D converter 40a2 transmits the converted digital signal to the power detector 50a2.

The A / D converter 40a3 receives a signal from the antenna block output synthesizer 20a3. The A / D converter 40a3 converts the received signal from an analog signal to a digital signal. The A / D converter 40a3 transmits the converted digital signal to the power detector 50a3.

The A / D converter 40a4 receives a signal from the antenna block output synthesizer 20a4. The A / D converter 40a4 converts the received signal from an analog signal to a digital signal. The A / D converter 40a4 transmits the converted digital signal to the power detector 50a4.

The A / D converter 40a5 receives a signal from the sum synthesizer 30a1. The A / D converter 40a5 converts the received signal from an analog signal to a digital signal. The A / D converter 40a5 transmits the converted digital signal to the power detector 50a5 and the demodulation unit 60a1.

The power detector 50a1 receives a signal from the A / D converter 40a1. The power detector 50a1 measures the power indicated by the received signal. The power detector 50a1 transmits the measured power value to the control unit 70a1.

The power detector 50a2 receives a signal from the A / D converter 40a2. The power detector 50a2 measures the power indicated by the received signal. The power detector 50a2 transmits the measured power value to the control unit 70a1.

The power detector 50a3 receives a signal from the A / D converter 40a3. The power detector 50a3 measures the power indicated by the received signal. The power detector 50a3 transmits the measured power value to the control unit 70a1.

The power detector 50a4 receives a signal from the A / D converter 40a4. The power detector 50a4 measures the power indicated by the received signal. The power detector 50a4 transmits the measured power value to the control unit 70a1.

The power detector 50a5 receives a signal from the A / D converter 40a5. The power detector 50a5 measures the power indicated by the received signal. The power detector 50a5 transmits the measured power value to the control unit 70a1.

The demodulation unit 60a1 receives a signal from the A / D converter 40a5. The demodulation unit 60a1 demodulates the received signal.

The control unit 70a1 receives the value of the electric power measured from each of the electric power detectors 50a. The control unit 70a1 calculates the power gain from the value of the received power. The control unit 70a1 transmits a control signal for adjusting the phase of the phase shifter 102a to the phase shifter 102a according to the calculated power gain, that is, the strength of the received signal. Further, the control unit 70a1 transmits a control signal for adjusting the phase of the 102b to the phase shifter 102b according to the calculated power gain.
The method for calculating the amount of phase adjustment during beamforming is, for example, the non-patent document "Shigeki Takeda," Chapter 8 Antenna Signal Processing ", February 2013, Institute of Electronics, Information and Communication Engineers, [2016]. Searched on October 17, 2014], URL http://www.ieice-hbkb.org/files/04/04gun_02hen_08.pdf ".

The array antenna 101 of the phased array receiver 1 is composed of antenna elements 101a and 101b. Each of the antenna elements 101a and 101b is omnidirectional.
As shown in FIG. 3, the antenna elements constituting the array antenna 101 are the antenna elements 101a1, 101b1, 101a2, 101b2, 101a3, 101b3, 101a4, 101b4, 101a5, 101b5, 101a6, 101b6, 101a7, in the array antenna 101. The 101b7, 101a8, and 101b8 are provided in a straight line at equal intervals in this order.
In FIG. 3, the center of the array antenna 101, that is, the position between the antenna element 101b4 and the antenna element 101a5 is defined as the origin O, and the direction from the origin O toward the antenna element 101a1 is defined as the positive direction of the X-axis. Further, the axis orthogonal to the X axis and passing through the origin O is defined as the Y axis.
Further, the positive direction of the X-axis from the origin O is set to an angle of 0 degrees, and an angle of 360 degrees is defined in one round counterclockwise around the origin O on the XY plane.

In the first embodiment, the functional unit that passes the signal from each of the antenna elements 101a and 101b to the synthesizer in the previous stage of the A / D converter 40a, that is, the antenna elements 101a and 101b having the same directivity. And the antenna block output synthesizer 20a (partial synthesizer) that synthesizes the signals received by each of the antenna elements 101a and 101b are defined as one antenna unit.
Specifically, the antenna blocks 10a1 and 10a2 and the antenna block output synthesizer 20a1 (partial synthesizer) are the antenna portions 300a1. Further, the antenna blocks 10a3 and 10a4 and the antenna block output synthesizer 20a2 (partial synthesizer) are the antenna portions 300a2. Further, the antenna blocks 10a5 and 10a6 and the antenna block output synthesizer 20a3 (partial synthesizer) are the antenna portions 300a3. Further, the antenna blocks 10a7 and 10a8 and the antenna block output synthesizer 20a4 (partial synthesizer) are the antenna portions 300a4. In the first embodiment, the antenna portions 300a1, 300a2, 300a3, and 300a4 are also referred to as antenna portions 300a.

(Specific example 1)
Next, the processing flow shown in FIG. 4 in which the phased array receiver 1 according to the first embodiment detects the movement of the transmission device to be communicated will be described.
In the first embodiment, the antenna elements 101a1, 101b1, 101a2, 101b2 are referred to as the first partial antenna 101ant1. The antenna elements 101a3, 101b3, 101a4, 101b4 are referred to as a second partial antenna 101ant2. The antenna elements 101a5, 101b5, 101a6, 101b6 are referred to as a third partial antenna 101ant3. Further, the antenna elements 101a7, 101b7, 101a8, 101b8 are referred to as a fourth partial antenna 101ant4.

Immediately after the phased array receiver 1 according to the first embodiment starts communication, the control unit 70a1 aligns the four directivities of the first partial antenna 101ant1 to the fourth partial antenna 101ant4, and uses techniques such as the beamformer method. The control signal is transmitted to each of the phase shifters 102a and 102b in the direction in which the radio wave is strong, that is, in the direction in which the power indicated by the power detector 50a5 is maximized (step S1).
Specifically, the control unit 70a1 changes the value of the control signal, for example, and changes the directions of the four main lobes of the first partial antenna 101ant1 to the fourth partial antenna 101ant4 in the same direction from 0 degrees to 360 degrees. Then, the control signal that maximizes the power indicated by the power detector 50a5 is specified.

The control signals transmitted by the control unit 70a1 to the phase shifters 102a and 102b are, for example, the magnification of the unit vector in the 0 degree direction (positive direction of the X axis) shown in FIG. 3 and the X axis. Includes a sign indicating the positive or negative direction of, a magnification for the unit vector in the 90 degree direction (positive direction of the Y axis), and a sign indicating the positive or negative direction of the Y axis.
The control unit 70a1 has a magnification of the unit vector in the 0 degree direction for each of the first partial antenna 101ant1 to the fourth partial antenna 101ant4, a sign indicating the positive or negative direction of the X axis, and a 90 degree. Determines the magnification for the unit vector of the direction and the sign indicating the positive or negative direction of the Y-axis. Then, the control unit 70a1 multiplies the first partial antenna 101ant1 by multiplying the unit vector in the 0 degree direction by the determined magnification and multiplying the vector directed in the direction of the determined code by the unit vector in the 90 degree direction by the determined magnification. By synthesizing the vector directed in the direction of the determined code, the angle indicated by the direction of the combined vector can be determined as the directivity of the first partial antenna 101ant1. Further, the control unit 70a1 multiplies the second partial antenna 101ant2 by multiplying the unit vector in the 0 degree direction by the determined magnification and multiplying the vector directed in the direction of the determined code by the unit vector in the 90 degree direction by the determined magnification. By synthesizing the vector directed in the direction of the determined code, the angle indicated by the direction of the combined vector can be determined as the directivity of the second partial antenna 101ant2. Further, the control unit 70a1 multiplies the third partial antenna 101ant3 by multiplying the unit vector in the 0 degree direction by the determined magnification and multiplying the vector directed in the direction of the determined code by the unit vector in the 90 degree direction by the determined magnification. By synthesizing the vector directed in the direction of the determined code, the angle indicated by the direction of the combined vector can be determined as the directivity of the third partial antenna 101ant3. Further, the control unit 70a1 multiplies the fourth partial antenna 101ant4 by the unit vector in the 0 degree direction and the vector directed in the determined sign direction by multiplying the unit vector in the 0 degree direction by the unit vector in the 90 degree direction. By synthesizing the vector directed in the direction of the determined code, the angle indicated by the direction of the combined vector can be determined as the directivity of the fourth partial antenna 101ant4.
Further, the control unit 70a1 further synthesizes all of the synthesized vectors for each of the first partial antenna 101ant1 to the fourth partial antenna 101ant4, thereby further synthesizing the signal strength of the phased array receiver 1 as a whole according to the first embodiment. Can determine the direction of the main lobe, which is the maximum beam.

The control unit 70a1 transmits control signals having different directivities of the first partial antenna 101ant1 to the fourth partial antenna 101ant4 to the phase shifters 102a and 102b (step S2).
Specifically, for example, when the direction in which the power indicated by the power detector 50a5 is maximized is the direction of 80 degrees on the XY plane, the control unit 70a1 sets the direction of the main lobe of the first partial antenna 101ant1 to 65. The control signal to be used is transmitted to each of the phase shifters 102a1, 102b1, 102a2, and 102b2. Further, the control unit 70a1 transmits a control signal with the direction of the main lobe of the second partial antenna 101ant2 to 75 degrees to each of the phase shifters 102a3, 102b3, 102a4, 102b4. Further, the control unit 70a1 transmits a control signal with the direction of the main lobe of the third partial antenna 101ant3 to 85 degrees to each of the phase shifters 102a5, 102b5, 102a6, 102b6. Further, the control unit 70a1 transmits a control signal having the direction of the main lobe of the fourth partial antenna 101ant4 set to 95 degrees to each of the phase shifters 102a7, 102b7, 102a8, 102b8.

The control unit 70a1 calculates the power gain at predetermined time intervals (step S3).
For example, the orientation of the main lobe of the first partial antenna 101ant1 is 65 degrees, the orientation of the main lobe of the second partial antenna 101ant2 is 75 degrees, the orientation of the main lobe of the third partial antenna 101ant3 is 85 degrees, and the orientation of the fourth partial antenna 101ant4. When the direction of the main lobe is 95 degrees, the control unit 70a1 calculates the power gain as -4.1 dB from the power measured by the power detector 50a1 as shown in FIG. (Note that the power gain shown in FIG. 5 is a normalized gain normalized by the maximum value of the power gain of the entire antenna 101.) Further, the control unit 70a1 is obtained from the power measured by the power detector 50a2 in FIG. As shown in, the power gain is calculated as −0.4 dB. Further, the control unit 70a1 calculates the power gain as −0.4 dB from the power measured by the power detector 50a3, as shown in FIG. Further, the control unit 70a1 calculates the power gain as -4.6 dB from the power measured by the power detector 50a4, as shown in FIG. The power gain obtained by adding up these four power gains, that is, the power gain calculated from the power measured by the power detector 50a5 is the power gain shown by the solid line in FIG. The peak gain of the phased array receiver 1 according to the first embodiment is about 2.6 dB lower than the peak gain shown by the main lobe of the phased array receiver 1 of the comparative example shown in FIG. 7. However, the sidelobes gain of the phased array receiver 1 according to the first embodiment is lower than the sidelobes gain of the phased array receiver of the comparative example. And the decrease in the gain of the sidelobes is larger than the decrease in the gain of the main lobe. From this, the phased array receiver 1 according to the first embodiment is less susceptible to the influence of radio waves transmitted by other than the transmission device 200 (not shown) to be communicated, as compared with the phased array receiver of the comparative example. You can see that.
Note that the phased array receiver 1 of the comparative example shown in FIG. 7 is different from the phased array receiver 1 according to the first embodiment, and the control unit 70a1 is the main lobe of the first partial antenna 101ant1 to the fourth partial antenna 101ant4. A control signal is transmitted to the phase shifters 102a and 102b, respectively, in which all the directions of the two are the same and all of the main lobes are directed to the transmission device 200 to be communicated.

The control unit 70a1 determines whether or not the transmission device 200 to be communicated has moved (step S4).
Specifically, the control unit 70a1 determines that the transmitter 200 has moved the previous time (immediately after the phased array receiver 1 starts communication, the main lobe of the first partial antenna 101ant1 to the fourth partial antenna 101ant4). When the power gain (when the respective directions are shifted) changes to a predetermined power gain or more, it is determined that the transmission device 200 has moved. Further, the control unit 70a1 determines that the transmission device 200 has not moved when the change is less than a predetermined power gain from the previous power gain determined that the transmission device 200 has moved.
Here, as the predetermined power gain, even when the amount of attenuation of the received signal due to the difference in the orientation of the main lobes of the first partial antenna 101ant1 to the fourth partial antenna 101ant4 occurs, the phased array receiver 1 A value within a range in which communication between the device and the transmitter 200 can be continued (within a continuous range) (for example, a change amount of power gain of 1 dB) is set.

As specific numerical examples, the orientation of the main lobe of the first partial antenna 101ant1 is 65 degrees, the orientation of the main lobe of the second partial antenna 101ant2 is 75 degrees, and the orientation of the main lobe of the third partial antenna 101ant3 is 85 degrees. When the transmitter 200 moves from 80 degrees to -5 degrees, that is, from 80 degrees to 75 degrees while the main lobe of the fourth partial antenna 101ant4 is oriented at 95 degrees, the control unit 70a1 powers the unit 70a1. From the power measured by the detector 50a1, the power gain is calculated as −1.6 dB. Further, the control unit 70a1 calculates the power gain as 0 dB from the power measured by the power detector 50a2. Further, the control unit 70a1 calculates the power gain as -1.8 dB from the power measured by the power detector 50a3. Further, the control unit 70a1 calculates the power gain as −9.3 dB from the power measured by the power detector 50a4.
Further, the orientation of the main lobe of the first partial antenna 101ant1 is 65 degrees, the orientation of the main lobe of the second partial antenna 101ant2 is 75 degrees, the orientation of the main lobe of the third partial antenna 101ant3 is 85 degrees, and the orientation of the fourth partial antenna 101ant4. When the transmitter 200 moves from 80 degrees to +5 degrees, that is, from 80 degrees to 85 degrees with the main lobe oriented at 95 degrees, the control unit 70a1 receives power measured by the power detector 50a1. The power gain is calculated as -8.6 dB. Further, the control unit 70a1 calculates the power gain as -1.8 dB from the power measured by the power detector 50a2. Further, the control unit 70a1 calculates the power gain as 0 dB from the power measured by the power detector 50a3. Further, the control unit 70a1 calculates the power gain as -1.9 dB from the power measured by the power detector 50a4.

The phased array receiver 1 has a plurality of positions in a state where the directions of the main lobes of the first partial antenna 101ant1 to the fourth partial antenna 101ant4 are shifted by 10 degrees as described above, for example, by experiments or simulations. The power gain when receiving signals of a plurality of radio wave strengths transmitted from the transmitting device in (angle and distance) is obtained in advance. Then, the phased array receiver 1 stores in advance the correspondence between the power gain and the position of the transmitting device for each of the first partial antenna 101ant1 to the fourth partial antenna 101ant4 in the data table TBL1 (not shown).

When the control unit 70a1 determines that the transmission device 200 has not moved (NO in step S4), the control unit 70a1 returns to the process of step S3.
Further, when the control unit 70a1 determines that the transmission device 200 has moved (YES in step S4), the power gain calculated from the power measured by each of the power detectors 50a1, 50a2, 50a3, and 50a4, and the data table TBL1. Compare with the power gain in (step S5).
The control unit 70a1 specifies in the data table TBL1 a power gain that matches the power gain calculated from the power measured by each of the power detectors 50a1, 50a2, 50a3, and 50a4 (step S6). The control unit 70a1 identifies the position corresponding to the power gain specified in the data table TBL1 as the position after the transmission device 200 is moved (step S7).
The control unit 70a1 returns to step S2, and keeps the magnitude of the directivity deviation of the first partial antenna 101ant1 to the fourth partial antenna 101ant4, and keeps the magnitude of the directivity shift, and the main lobe of the antenna 101 in the direction of the position after the transmission device 200 is moved. Is transmitted to each of the phase shifters 102a and 102b.
As described above, the phased array receiver 1 according to the first embodiment can specify in which direction the communication partner has moved by measuring the change in the received power.

The phased array receiver 1 according to the first embodiment has been described above. In the phased array receiver 1 according to the first embodiment, the antenna unit 300a combines the plurality of antenna elements 101a and 101b with the first output signals of the antenna elements 101a and 101b to output a second output signal. Includes antenna block output synthesizers 20a1 to 20a4 (partial synthesizer).
The power detectors 50a1 to 50a4 (partial power detection means) measure the signal strength of each second output signal output from each antenna block output combiner 20a1 to 20a4. The control unit 70a1 (position specifying unit) identifies the position of the transmission device 200 (communication device) to be communicated based on the signal strength of the measured second output signal of each antenna block output combiner 20a1 to 20a4. .. The summation synthesizer 30a1 synthesizes the second output signal of each antenna unit 300a and outputs the third output signal. The control unit 70a1 (phase control unit) is a communication device 200 in which the control unit 70a1 (position identification unit) identifies the main lobe, which is a beam having the maximum signal strength of the third output signal output from the summation synthesizer 30a1. The phase of each of the antenna elements 101a and 101b is controlled so as to be directed to the position of.
In this way, the phased array receiver 1 according to the first embodiment has a small circuit scale, detects the movement of the communication device 200 to be communicated, and sets the directivity of the antenna 101 to the communication device 200 to be communicated. Can be turned to.

Further, in the phased array receiver 1 according to the first embodiment, the control unit 70a1 (phase control unit) has the direction of one or more main lobes of the plurality of antenna units 300a and the direction of one or more of the plurality of antenna units 300a. The phase of each antenna element 101a and 101b is controlled so that the direction of the main lobe of the other antenna unit 300a is different from that of the main lobe.
In this way, the phased array receiver 1 according to the first embodiment can adjust the sensitivity for detecting the movement of the communication device 200 to be communicated. Further, the phased array receiver 1 can adjust the directivity of the antenna 101.

Further, in the phased array receiver 1 according to the first embodiment, the demodulation unit 60a1 demodulates the signal after synthesis by the summation synthesizer 30a1.
In this way, the phased array receiver 1 according to the first embodiment can read the information indicated by the signal received from the communication device 200 to be communicated.

<Second embodiment>
The configuration of the phased array receiver 1 according to the second embodiment will be described.
As shown in FIG. 8, the phased array receiver 1 according to the second embodiment has an antenna block 10a1 to 10a8, an antenna block output synthesizer 20a1 to 20a4, a total sum synthesizer 30a1, an A / D converter 40a1 to 40a4, and a power source. The detectors 50a1 to 50a3 (partial power detection means), the power detector 50a4 (total power detection means), the demodulation unit 60a1, and the control unit 70a1 (position specifying unit, phase control unit) are provided.
Hereinafter, the antenna blocks 10a1 to 10a8 are collectively referred to as an antenna block 10a. Further, the antenna block output synthesizers 20a1 to 20a4 are collectively referred to as an antenna block output synthesizer 20a. Further, the A / D converters 40a1 to 40a4 are collectively referred to as an A / D converter 40a. Further, the power detectors 50a1 to 50a4 are collectively referred to as a power detector 50a.

As shown in FIG. 2, each of the antenna blocks 10a includes antenna elements 101a and 101b, phase shifters 102a and 102b, and phase shifter output synthesizer 103a (partial synthesizer).

The phase shifter output synthesizer 103a1 of the antenna block 10a1 transmits the synthesized signal to the antenna block output synthesizer 20a1 and the A / D converter 40a1.
The phase shifter output synthesizer 103a2 of the antenna block 10a2 transmits the synthesized signal to the antenna block output synthesizer 20a1 and the A / D converter 40a2.
The phase shifter output synthesizer 103a3 of the antenna block 10a3 transmits the synthesized signal to the antenna block output synthesizer 20a2.
The phase shifter output combiner 103a4 of the antenna block 10a4 transmits the synthesized signal to the antenna block output combiner 20a2.
The phase shifter output synthesizer 103a5 of the antenna block 10a5 transmits the synthesized signal to the antenna block output synthesizer 20a3.
The phase shifter output synthesizer 103a6 of the antenna block 10a6 transmits the synthesized signal to the antenna block output synthesizer 20a3.
The phase shifter output synthesizer 103a7 of the antenna block 10a7 transmits the synthesized signal to the antenna block output synthesizer 20a4.
The phase shifter output synthesizer 103a8 of the antenna block 10a8 transmits the synthesized signal to the antenna block output synthesizer 20a4 and the A / D converter 40a3.

The antenna block output synthesizer 20a1 receives a signal from the antenna block 10a1. Further, the antenna block output synthesizer 20a1 receives a signal from the antenna block 10a2. The antenna block output synthesizer 20a1 synthesizes the two received signals. The antenna block output synthesizer 20a1 transmits the combined signal to the summation synthesizer 30a1.

The antenna block output synthesizer 20a2 receives a signal from the antenna block 10a3. Further, the antenna block output synthesizer 20a2 receives a signal from the antenna block 10a4. The antenna block output synthesizer 20a2 synthesizes the two received signals. The antenna block output synthesizer 20a2 transmits the combined signal to the summation synthesizer 30a1.

The antenna block output synthesizer 20a3 receives a signal from the antenna block 10a5. Further, the antenna block output synthesizer 20a3 receives a signal from the antenna block 10a6. The antenna block output synthesizer 20a3 synthesizes the two received signals. The antenna block output synthesizer 20a3 transmits the combined signal to the summation synthesizer 30a1.

The antenna block output synthesizer 20a4 receives a signal from the antenna block 10a7. Further, the antenna block output synthesizer 20a4 receives a signal from the antenna block 10a8. The antenna block output synthesizer 20a4 synthesizes the two received signals. The antenna block output synthesizer 20a4 transmits the combined signal to the summation synthesizer 30a1.

The summation synthesizer 30a1 receives signals from each of the antenna block output synthesizer 20a1 to the antenna block output synthesizer 20a4. The summation synthesizer 30a1 synthesizes the four received signals. The summation synthesizer 30a1 transmits the combined signal to the A / D converter 40a4.

The A / D converter 40a1 receives a signal from the phase shifter output synthesizer 103a1. The A / D converter 40a1 converts the received signal from an analog signal to a digital signal. The A / D converter 40a1 transmits the converted digital signal to the power detector 50a1.

The A / D converter 40a2 receives a signal from the phase shifter output synthesizer 103a2. The A / D converter 40a2 converts the received signal from an analog signal to a digital signal. The A / D converter 40a2 transmits the converted digital signal to the power detector 50a2.

The A / D converter 40a3 receives a signal from the phase shifter output synthesizer 103a8. The A / D converter 40a3 converts the received signal from an analog signal to a digital signal. The A / D converter 40a3 transmits the converted digital signal to the power detector 50a3.

The A / D converter 40a4 receives a signal from the sum synthesizer 30a1. The A / D converter 40a4 converts the received signal from an analog signal to a digital signal. The A / D converter 40a4 transmits the converted digital signal to the power detector 50a4 and the demodulation unit 60a1.

The power detector 50a1 receives a signal from the A / D converter 40a1. The power detector 50a1 measures the power indicated by the received signal. The power detector 50a1 transmits the measured power value to the control unit 70a1.

The power detector 50a2 receives a signal from the A / D converter 40a2. The power detector 50a2 measures the power indicated by the received signal. The power detector 50a2 transmits the measured power value to the control unit 70a1.

The power detector 50a3 receives a signal from the A / D converter 40a3. The power detector 50a3 measures the power indicated by the received signal. The power detector 50a3 transmits the measured power value to the control unit 70a1.

The power detector 50a4 receives a signal from the A / D converter 40a4. The power detector 50a4 measures the power indicated by the received signal. The power detector 50a4 transmits the measured power value to the control unit 70a1.

The demodulation unit 60a1 receives a signal from the A / D converter 40a4. The demodulation unit 60a1 demodulates the received signal.

The control unit 70a1 receives the value of the electric power measured from each of the electric power detectors 50a. The control unit 70a1 calculates the power gain from the value of the received power. The control unit 70a1 transmits a control signal for adjusting the phase of the phase shifter 102a to the phase shifter 102a according to the calculated power gain, that is, the strength of the received signal. Further, the control unit 70a1 transmits a control signal for adjusting the phase of the phase shifter 102b to the phase shifter 102b according to the calculated power gain.

Similar to the antenna element in the second embodiment, the antenna element constituting the antenna 101 in the second embodiment is the antenna element 101a1, 101b1, 101a2, 101b2, 101a3 in the antenna 101, as shown in FIG. , 101b3, 101a4, 101b4, 101a5, 101b5, 101a6, 101b6, 101a7, 101b7, 101a8, 101b8 in this order at equal intervals.

In the second embodiment, the functional unit that passes the signal from each of the antenna elements 101a and 101b to the synthesizer (partial synthesizer) in the previous stage of the A / D converter 40a, that is, has the same directivity. Each of the antenna elements 101a and 101b and the phase shifter output synthesizer 103a (partial synthesizer) that synthesizes the signals received by each of the antenna elements 101a and 101b are defined as one antenna unit.
Specifically, the antenna block 10a1 is the antenna portion 300a. Further, the antenna block 10a2 is an antenna portion 300b. Further, the antenna block 10a8 is an antenna portion 300c.

Further, although the A / D converter 40a is not connected, each of the antenna blocks 10a3 to 10a7 having the same directivity as the antenna block 10a2 can be regarded as an antenna unit.
Specifically, the antenna block 10a3 is an antenna unit 300d. The antenna block 10a4 is an antenna portion 300e. The antenna block 10a5 is an antenna portion 300f. The antenna block 10a6 is an antenna portion of 300 g. The antenna block 10a7 is an antenna portion 300h. In the second embodiment, the antenna portions 300a, 300b, 300c, 300d, 300e, 300f, 300g, and 300h are also referred to as antenna portions 300a.

The phased array receiver 1 according to the first embodiment has different directivity for each antenna unit including four antenna elements. On the other hand, in the phased array receiver 1 according to the second embodiment, two of the antenna portions including the two antenna elements provided at the farthest positions from each other have different directivity from the other antenna portions.

(Specific example 2)
Next, the processing flow shown in FIG. 9 in which the phased array receiver 1 according to the second embodiment detects the movement of the transmitting device to be communicated will be described.
In the second embodiment, as shown in FIG. 10, the antenna elements 101a1 and 101b1 are referred to as a first partial antenna 101ant1. The antenna elements 101a2 and 101b2 are referred to as a second partial antenna 101ant2. The antenna elements 101a3 and 101b3 are referred to as a third partial antenna 101ant3. The antenna elements 101a4 and 101b4 are referred to as a fourth partial antenna 101ant4. The antenna elements 101a5 and 101b5 are referred to as a fifth partial antenna 101ant5. The antenna elements 101a6 and 101b6 are referred to as a sixth partial antenna 101ant6. The antenna elements 101a7 and 101b7 are referred to as a seventh partial antenna 101ant7. The antenna elements 101a8 and 101b8 are referred to as the eighth partial antenna 101ant8.

Immediately after the phased array receiver 1 according to the second embodiment starts communication, the control unit 70a1 aligns the eight directivities of the first partial antenna 101ant1 to the eighth partial antenna 101ant8, and uses techniques such as the beamformer method. The control signal is transmitted to each of the phase shifters 102a and 102b in the direction in which the radio wave is strong, that is, in the direction in which the power indicated by the power detector 50a4 is maximized (step S11).
Specifically, the control unit 70a1 changes the value of the control signal, for example, and changes the directions of the eight main lobes of the first partial antenna 101ant1 to the eighth partial antenna 101ant8 in the same direction from 0 degrees to 360 degrees. Then, the control signal that maximizes the power indicated by the power detector 50a4 is specified.

The control unit 70a1 sets the control signal in the direction in which the power indicated by the power detector 50a4 that specifies the direction of the main lobe of the second partial antenna 101ant2 to the seventh partial antenna 101ant7 is maximized, the phase shifters 102a2 to 102a7, A control signal is transmitted to each of 102b2 to 102b7, and the directivity of each of the first partial antenna 101ant1 and the eighth partial antenna 101ant8 is different from that of the second partial antenna 101ant2 to the seventh partial antenna 101ant7. It is transmitted to each of 102a8, 102b1 and 102b8 (step S12).
Specifically, for example, when the direction in which the power indicated by the power detector 50a4 is maximized is the direction of 80 degrees on the XY plane, the control unit 70a1 is the second partial antenna 101ant2 to the seventh partial antenna 101ant7. A control signal with the direction of the main lobe set to 80 degrees is transmitted to each of the phase shifters 102a1 to 102a7 and 102b1 to 102b7. Further, the control unit 70a1 transmits a control signal with the direction of the main lobe of the first partial antenna 101ant1 to 70 degrees to each of the phase shifters 102a1 and 102b1. Further, the control unit 70a1 transmits a control signal with the direction of the main lobe of the eighth partial antenna 101ant8 set to 90 degrees to each of the phase shifters 102a8 and 102b8.

The control unit 70a1 calculates the power gain at predetermined time intervals (step S13).
For example, the orientation of the main lobe of the first partial antenna 101ant1 is 70 degrees, the orientation of the main lobes of the second partial antenna 101ant2 to the seventh partial antenna 101ant7 is 80 degrees, and the orientation of the main lobe of the eighth partial antenna 101ant8 is 90 degrees. If so, the control unit 70a1 calculates the power gain to be -11.6 dB from the power measured by the power detector 50a1, as shown in FIG. (Note that the power gain shown in FIG. 11 is a normalized gain normalized by the maximum value of the power gain of the entire antenna 101.) Further, the control unit 70a1 is obtained from the power measured by the power detector 50a2 in FIG. As shown in, the power gain is calculated as 0 dB. Further, the control unit 70a1 calculates the power gain as -11.3 dB from the power measured by the power detector 50a3, as shown in FIG. The power gain for the antenna blocks 10a3 to 10a7 in FIG. 11 is 80 degrees in which the direction of the main lobe of the second partial antenna 101ant2 to the seventh partial antenna 101ant7 is the direction of the transmission device 200 to be communicated. Therefore, it is 0 dB like the antenna block 10a2. Further, the power gain obtained by adding up these eight power gains, that is, the power gain calculated from the power measured by the power detector 50a4 is the power gain shown in FIG. The peak gain of the phased array receiver 1 according to the second embodiment is lower than the peak gain by the related technique as in the phased array receiver 1 according to the first embodiment, but the gain of the sidelobes. Is also lower than the sidelobes gain from related techniques. From this, it can be seen that the phased array receiver 1 according to the second embodiment is less susceptible to the influence of radio waves transmitted by other than the transmission device 200 to be communicated, as compared with the receiver according to the related technique.
The peak gain of the phased array receiver 1 according to the second embodiment is based on the first embodiment because the main lobes of the second partial antenna 101ant2 to the seventh partial antenna 101ant7 face the direction of the transmitter 200. It is larger than the peak gain of the phased array receiver 1.

The control unit 70a1 determines whether or not the transmission device 200 to be communicated has moved (step S14).
Specifically, the control unit 70a1 determines that the transmitter 200 has moved the previous time (immediately after the phased array receiver 1 starts communication, the main lobe of the first partial antenna 101ant1 and the eighth partial antenna 101ant8). When the power gain (when the respective directions are shifted) changes to a predetermined power gain or more, it is determined that the transmission device 200 has moved. Further, the control unit 70a1 determines that the transmission device 200 has not moved when the change is less than a predetermined power gain from the previous power gain determined that the transmission device 200 has moved.
Here, as the predetermined power gain, even when the amount of attenuation of the received signal due to the difference in the orientation of the main lobes of the first partial antenna 101ant1 and the eighth partial antenna 101ant8 occurs, the phased array receiver 1 A value within a range in which communication between the device and the transmitter 200 can be continued (for example, a change amount of power gain of 1 dB) is set.
As specific numerical examples, the direction of the main lobe of the first partial antenna 101ant1 is 70 degrees, the direction of the main lobes of the second partial antenna 101ant2 to the seventh partial antenna 101ant7 is 80 degrees, and the direction of the main lobe of the eighth partial antenna 101ant8 is 80 degrees. When the transmitter 200 moves from 80 degrees to -5 degrees, that is, from 80 degrees to 75 degrees while the main lobe is oriented at 90 degrees, the control unit 70a1 starts from the power measured by the power detector 50a1. , The power gain is calculated as -17.7 dB. Further, the control unit 70a1 calculates the power gain as -1.98 dB from the power measured by the power detector 50a2. Further, the control unit 70a1 calculates the power gain as -2.98 dB from the power measured by the power detector 50a3.

In the phased array receiver 1, for example, as described above, the first partial antenna 101ant1, the second partial antenna 101ant2 to the seventh partial antenna 101ant7, and the eighth partial antenna 101ant8 are each main of the phased array receiver 1 by experiments or simulations. The power gain when receiving signals of a plurality of radio wave strengths transmitted from the transmitting device 200 at a plurality of positions (angles and distances) in a state where the directions of the lobes are shifted by 10 degrees is obtained in advance. Then, the phased array receiver 1 stores in advance the correspondence between the power gain for each of the first partial antenna 101ant1 to the eighth partial antenna 101ant8 and the position of the transmission device 200 in the data table TBL1.

When the control unit 70a1 determines that the transmission device 200 has not moved (NO in step S14), the control unit 70a1 returns to the process of step S13.
Further, when the control unit 70a1 determines that the transmission device 200 has moved (YES in step S14), the power gain calculated from the power measured by each of the power detectors 50a1, 50a2, 50a3, and 50a4, and the data table TBL1. Compare with the power gain in (step S15).
The control unit 70a1 specifies a matching power gain in the data table TBL1 (step S16). The control unit 70a1 identifies the position corresponding to the power gain specified in the data table TBL1 as the position after the transmission device 200 is moved (step S17).
The control unit 70a1 returns to step S12, and keeps the magnitude of the directivity deviation of the first partial antenna 101ant1 and the eighth partial antenna 101ant8, and keeps the magnitude of the directivity shift, and the main lobe of the antenna 101 in the direction of the position after the transmission device 200 is moved. The control signal to which is directed is transmitted to each of the phase shifters 102a and 102b.
As described above, the phased array receiver 1 according to the second embodiment can specify in which direction the communication partner has moved by measuring the change in the received power.

The phased array receiver 1 according to the second embodiment has been described above. In the phased array receiver 1 according to the second embodiment, the antenna unit 300a combines the plurality of antenna elements 101a and 101b with the first output signals of the antenna elements 101a and 101b to output the second output signal. Includes a phase shifter output synthesizer 103a (partial synthesizer). The power detectors 50a1 to 50a3 (partial power detection means) measure the signal strength of each second output signal output from each phase shifter output combiner 103a. The control unit 70a1 (position specifying unit) identifies the position of the transmission device 200 (communication device) to be communicated based on the signal strength of the measured second output signal of each antenna block output combiner 20a1 and 20a4. ..
The summation synthesizer 30a1 synthesizes the second output signal of each antenna unit 300a and outputs the third output signal. The control unit 70a1 (phase control unit) is a communication device 200 in which the control unit 70a1 (position identification unit) identifies the main lobe, which is a beam having the maximum signal strength of the third output signal output from the summation synthesizer 30a1. The phase of each of the antenna elements 101a and 101b is controlled so as to be directed to the position of.
In this way, the phased array receiver 1 according to the second embodiment has a small circuit scale, detects the movement of the communication device 200 to be communicated, and sets the directivity of the array antenna 101 to the communication device to be communicated. You can turn to 200.
Further, the phased array receiver 1 according to the second embodiment is a beam having the maximum signal intensity of the output signal of the total sumizer 30a1 as compared with the phased array receiver 1 according to the first embodiment. That is, the directivity of the array antenna 101 can be strengthened.

The power detector according to the first and second embodiments is assumed to be a digital circuit, but is not limited thereto. The power detector according to the first and second embodiments may be an analog circuit provided between the synthesizer and the A / D converter.

The array antennas 101 according to the first and second embodiments are arranged at equal intervals on a straight line, but the array antennas 101 according to the first and second embodiments are not limited to this.
Further, although only the phase of each received signal is changed in the first and second embodiments, the amplitude adjustment may be performed at the same time as is performed by general beamforming.

The number of antenna blocks 10a in the first and second embodiments is not limited to eight. The number of antenna blocks 10a may be an even number or an odd number as long as it is two or more.
Further, the number of antenna elements in the antenna block 10a according to the first and second embodiments is not limited to two. The number of antenna elements may be an even number or an odd number as long as it is two or more. In this case, one phase shifter is connected to each of the antenna elements, and the phase shifter output combiner 103a synthesizes all the output signals of the phase shifters.

<Minimum configuration>
Next, the phased array receiver 1 having the minimum configuration according to the embodiment will be described.
As shown in FIG. 13, the phased array receiver 1 (wireless communication device) having the minimum configuration according to the embodiment includes antenna units 300a1, 300a2, partial power detection means 50a1, 50a2, and control unit 70a1 (position specifying unit, phase control unit). ), A sum synthesizer 30a1.

The antenna unit 300a1 includes antenna elements 101a1 and 101b1. Further, the antenna unit 300a1 includes a partial synthesizer 400a1 that synthesizes the output signals of the antenna elements 101a1 and 101b1.
The antenna unit 300a2 includes antenna elements 101a1 and 101b1. Further, the antenna unit 300a2 includes a partial synthesizer 400a2 that synthesizes the output signals of the antenna elements 101a1 and 101b1.

The partial power detecting means 50a1 measures the signal strength of the output signal of the partial synthesizer 400a1.

The partial power detecting means 50a2 measures the signal strength of the output signal of the partial synthesizer 400a2.

The control unit 70a1 (position specifying unit) identifies the position of the communication device 200 to be communicated based on the signal strength of each output signal of the partial synthesizers 400a1 and 400a2.

The summation synthesizer 30a1 synthesizes the output signals of the antenna portions 300a1 and 300a2, respectively.

The control unit 70a1 (phase control unit) directs the main lobe, which is the beam having the maximum signal strength of the output signal of the summation synthesizer 30a1, to the position of the communication device 200 specified by the control unit 70a1 (position identification unit). In addition, the phase of each antenna element 101a and 101b is controlled.

In this way, the phased array receiver 1 has a small circuit scale and can detect the movement of the communication device 200 to be communicated and direct the directivity of the array antenna 101 to the communication device 200 to be communicated. ..

In the processes in each of the above-described embodiments, the order of the processes may be changed as long as the appropriate processes are performed.

Each of the storage unit and the other storage devices in each of the above-described embodiments may be provided anywhere within a range in which appropriate information is transmitted and received. Further, each of the storage unit and the other storage devices may exist in a plurality of areas within a range in which appropriate information is transmitted and received, and the data may be distributed and stored.

Although a plurality of embodiments have been described, the control unit and other control devices in the phased array receiver 1 described above may have a computer system inside. The process of the above-mentioned processing is stored in a computer-readable recording medium in the form of a program, and the above-mentioned processing is performed by reading and executing this program by a computer (processor). Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Further, the computer program may be distributed to the computer via a communication line, and the computer receiving the distribution may execute the program.

Further, the above program may realize a part of the above-mentioned functions. Further, the program may be a file that can realize the above-mentioned functions in combination with a program already recorded in the computer system, that is, a so-called difference file (difference program).

Although some embodiments have been described, these embodiments are examples and do not limit the scope of the invention. These embodiments may be added, omitted, replaced, or modified without departing from the gist of the invention.

This application claims priority on the basis of Japanese Patent Application No. 2016-21128 filed in Japan on October 28, 2016 and incorporates all of its disclosures herein.

According to the present invention, the circuit scale is small, and it is possible to detect the movement of the communication device to be communicated and direct the directivity of the antenna to the communication device to be communicated.

1 ... Phased array receivers 10a1 to 10a8 ... Antenna block 20a1 to 20a4 ... Antenna block output combiner 30a1 ... Total synthesizer 40a1 to 40a5 ... A / D converter 50a1 to 50a5 ... Power detector 60a1 ... Demodulation unit 70a1 ... Control unit 101 ... Array antennas 101a, 101a1 to 101a8, 101b, 101b1 to 101b8 ... Antenna element 101ant1 ... First part antenna 101ant2 ... 2nd partial antenna 101ant3 ... 3rd partial antenna 101ant4 ... 4th partial antenna 101ant5 ... 5th partial antenna 101ant6 ... 6th partial antenna 101ant7 ... 7th partial antenna 101ant8 ... 8th Partial antennas 102a, 102a1 to 102a8, 102b, 102b1 to 102b8 ... Phase shifters 103a, 103a1 to 103a8 ... Phase shifters output combiner 200 ... Transmitters 300a1 to 300a4, 300a to 300h ... Antennas Department

Claims (5)

A plurality of antenna units including a plurality of antenna elements and a partial synthesizer that synthesizes a first output signal of each antenna element and outputs a second output signal.
A partial power detecting means for measuring the signal strength of each of the second output signals, and
A position specifying means for specifying the position of the communication device to be communicated based on the signal strength of each measured second output signal, and
A summation means for synthesizing the second output signal of the plurality of antenna units and outputting the third output signal, and
The phase of each antenna element is controlled and the phase of the antenna element is controlled so that the main lobe, which is the beam having the maximum signal strength of the third output signal, is directed to the position of the communication device specified by the position specifying means . Phase control means for controlling the phase of each of the antenna elements so as to shift the directivity of the plurality of antenna portions in different directions about the direction of the main lobe, which is the beam having the maximum signal strength of the output signal of 3. When,
A wireless communication device equipped with. The phase control means is
The phase of each antenna element so that the direction of one or more main lobes of the plurality of antenna portions and the direction of the main lobes of the other antenna portions of the plurality of antenna portions are different. To control,
The wireless communication device according to claim 1. A demodulation means for demodulating the third output signal,
The wireless communication device according to claim 1 or 2. A control method for a wireless communication device including a plurality of antenna units including a plurality of antenna elements and a partial synthesizer that synthesizes a first output signal of each antenna element and outputs a second output signal.
The first output signal of each of the plurality of antenna elements is combined to output the second output signal.
The signal strength of each of the plurality of second output signals is measured, and the signal strength is measured.
The position of the communication device to be communicated is specified based on the signal strength of each of the measured second output signals.
The plurality of second output signals are combined to output the third output signal, and the third output signal is output.
The phase of each antenna element is controlled so that the main lobe, which is the beam having the maximum signal intensity of the third output signal, is directed to the position of the communication device, and the third output signal of the third output signal is controlled. The phase of each antenna element is controlled so as to shift the directivity of the plurality of antenna portions in different directions about the direction of the main lobe, which is the beam having the maximum signal strength .
How to control a wireless communication device . It is a control program of a wireless communication device including a plurality of antenna units including a plurality of antenna elements and a partial synthesizer that synthesizes a first output signal of each antenna element and outputs a second output signal.
On the computer
A process of synthesizing the first output signal of each of the plurality of antenna elements and outputting the second output signal.
Processing to measure the signal strength of each of the plurality of second output signals, and
Processing to specify the position of the communication device to be communicated based on the signal strength of each measured second output signal, and
The process of synthesizing the plurality of second output signals and outputting the third output signal,
The phase of each antenna element is controlled so that the main lobe, which is the beam having the maximum signal intensity of the third output signal, is directed to the position of the communication device, and the third output signal of the third output signal is controlled. A process of controlling the phase of each antenna element so as to shift the directivity of the plurality of antenna portions in different directions about the direction of the main lobe, which is the beam having the maximum signal strength .
A control program for a wireless communication device that executes.

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